Nursing bottle



May 28, 1957 K. B. MAXWELL NURSING BOTTLE Filed May 6, 1954 IN V EN TOR. fzeaton Bruce Maxwell,

United States Patent NURSING BOTTLE Keaton Bruce Maxwell, Kansas City, Mo. Application May 6, 1954, Serial No. 427,955

3 Claims. (01. 215-11) This invention relates to a nursing bottle and more particularly to a nursing bottle having a collapsible and expansible inner container or sac.

It is an object of the present invention to provide means in a nursing bottle having a collapsible container or sac whereby the sac is prevented from collapsing when partially emptied from the milk and wherein there is an air opening in the nursing bottle to permit the sac to follow the milk as it is taken from the bottle and to thereby cause the full emptying of the collapsible container,

It is another object of the invention to provide in a nursing bottle having a collapsible container therein adequate means for the securement of the collapsible container at the open end of the nursing'bottle by means of the nipple cover so that there is an elfective seal be tween the sac and the upper edge of the nursing bottle.

It is another object of the invention to provide an elfective means in a nursing bottle having a collapsible container for the securement of the open end of the container with either the bottle or with the nipple support, such means including a spring ring member securable about the open end of the collapsible tube to thereby effect a positive engagement of the collapsible container with the parts of the nursing bottle.

Other objects of the invention are to provide a nursing bottle having the above objects in mind which is of simple construction, inexpensive to manufacture, has a minimum number of parts, compact, durable, convenient to use, effective and efiicient in use.

For other objects and for a better understanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which:

Figure 1 is a vertical sectional view of the combined nursing bottle and collapsible container constructed according to one form of the invention;

Fig. 2 is a vertical sectional view of the combined nursing bottle and collapsible container constructed according to another form of the invention;

Fig. 3 is a top plan view of the nipple and of the nipple cover according to the form of the invention shown in Fig. 1; I

Fig. 4 is a perspective view of a wire support disposable in the bottom of the bottle and about the central upstanding projection therein.

Referring now particularly to Figs. 1, 3 and 4, represents a bottle formed of glass or other suitable material which has a bottom 11 with a central upstanding projection 12 extending upwardly into the bottle to support a collapsible container 13. This central supporting portion 12 has an air opening 14 so as to permit entrance of the air into the bottle in order that the collapsible container 13 can be evenly and effectively collapsed as milk is taken from the container.

In order to prevent the collapsible container 13 from being collapsed into one side of the support 12 and into the bottom of the bottle, there is provided a wire support 15. This wire support has a coil 16 and depending sup- 2 porting members 17 and 18. This will prevent the collapsible container from getting down into the bottom of the bottle and collapsing to one side or the other of the upstanding projection 12.

The collapsible container 13 is formed of rubber or other flexible material and will expand under the weight of the milk when poured therein. The upper end of the container 13 is open, and its edge is folded over a pro jection 19 on the upper edge of the nursing bottle 10. This edge 19 is of annular shape and provides a seat against which the upper edgeof the container 13 is held upon placing of the nipple cover 20 over the top of the bottle. Below the annular seat portion 19 is an annular groove 21 into which the upper edge of the collapsible container 13 is extended and retained by a spring wire or elastic band 22. Threads 23 extend. outwardly of the seat portion 19 and cooperate with the threads on the cover. Upon tightening the cover on the:

threads 23, the top part of the cover 20 is brought down tightly against the container edge and the seat portion 19 to provide an effective sealing engagement of the cover 20 with the nursing bottle, 10.

The nipple cover 20 has a neck portion 24 adaptedthe securement of the container to the bottle prior to the In the present in' placing upon the bottle of a cover. stance the filling of the container can be effected through the neck portion 24 prior to the placing of the nipple 25 thereupon. The effective seal of the upper edge of the container 13 will have been made against the seat portion 19.

. As the container 19 is filled, it will expand and the:

weight of the milk will take the container into the bottom of the bottle and over the raised central portion 12. As the milk is extracted, the container, due to its elasticity, will contract, and since there is an opening 14 by which air can enter the bottom of the bottle, the contracting of the container is effected Without difliculty. The inside container will be surrounded by air pressure and will fol-low the milk as it leaves the container. The bottle is thereby allowed to be filled with air and to replace the milk as it is removed. There is little opportunity for air to be drawn into the milk and taken by the infant.

In Fig. 2, there is shown a slightly modified form of the invention wherein different means are provided for holding the upper edge of the container upon the nipple cover. A bottle 10' is provided with a similar upstand ing bottom portion 12 above which is disposed the wire supporting loop 15. A hole 14' is provided in the upper end of the portion 12.

The upper open end of the bottle 'has the threaded portion 23' and is without any seating portion. A cover 30 is provided with threads 31 for engaging the threads 23'. This cover has a neck portion 32 and a depending container supporting portion or skirt 33 with an annular groove 34 into which the upper edge of the container 13 is placed and retained by a spring metal ring 35. This container is thus placed upon the nipple cover 30 and the nipple cover secured to the bottle so that the container will extend downwardly into the bottle and over the central raised portion 12. After the container is disposed in the bottle, it can be filled through the neck opening 35 so that the container 13 is expanded to conform to the inner shape of the bottle and be lowered onto the wire loop support 15. A nipple 36 can then be Patented May 28, 1957- 3 placed upon the nipple portion 32. This nipple has a hole 37 in its upper end.

The operation of this assembly is similar to the operation of the assembly shown in Fig. 1, wherein the container '13 will follow the milk as the milk is drawn from the bottle through the nipple 36. By virtue of the open end 14' air is'perrnitted to enter the bottle vso: that adequate pressure is provided upon the exterior of the container 13 to cause the effective and gradual collapse :of the container 13. The container will collapse evenly and any tendency of the container to move to one side of thecentral-portion 12. or to the other is prevented by the wire loop 15.

It should now be apparent that there has been provided aneffective and eflicient nursing 'bottle assembly 7 containing a collapsible container wherein the collapsible container will be evenly collapsed, and the milk will be drawn from the assembly without 'difficulty.

While various changes may be made in the detail construction, it shall be understood thatsuch changes shall be within the spirit and scope of the-present invention as defined by the appended claims.

What is claimed is:

1. A nursing bottle assembly comprising a bottle apart, said bottle part having a bottom portion with an upstanding central projection with an air opening therein and an vopen externally threaded top, an internally threaded cover part "including a nipple attachable to the bottle part, a collapsible container having an open mouth and a closed bottom, means for securing the open mouth of said collapsible container to the cover part, said collapsible container engaging with and extending over the upstanding projection in the bottom of the bottle, said collapsible container being of expansible, flexible material, said upstanding central projection forming a recess in the bottom of the container and a support surrounding said upstanding projection providing an air space below the container to prevent the collapse and flow of the container to one side or the other of the upstanding projection.

2. A nursing bottle assembly comprising a bottle part, said bottle part having a bottom portion with an upen ages standing central projection with an air opening therein and an open top, a cover part including a nipple attachable to the bottle part, cooperative means on the bottle part and cover part removably securing said cover part on the bottle part, a collapsible container having an open mouth and a closed bottom, means for securing the open mouth of said collapsible container to the cover part, said collapsible container engaging with and extending over the upstanding projection of the bottom of the bott-le, said collapsible container being of expansible, flexible material, said upstanding central projection forming a recess in the bottom of the container, and a support surrounding said upstanding projection providing an air space below the container to prevent the collapse and flow of the container to one side or the other of the upstanding projection.

3. A nursing bottle assembly comprising a bottle part, said bottle part having a bottom portion with an upstanding central projection with an air opening therein and an open top, a cover part including a nipple attachable to the bottle part, cooperative means on the bottle part and cover part removably securing'said cover part on the bottle part, a collapsible container having an open mouth and a closed bottom, means for securing the open mouth of said collapsible container to the cover part, said upstanding central projection extending substantial'ly one-half the height-h of the bottle in spaced relation to the sides of said bottle, said collapsible con tainer being of expansible, flexible material with the bottom portion thereof engaging with and extending References Cited in the file of this patent UNITED STATES PATENTS 1,037,309 -Poore Sept. 3, 1912 2,133,411 Zohe Oct. 18, 1938 2,624,485 Boston Jan. 6, 1953 air. a: 

